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(No Model.) 2 Sheets-Sheet 1.

W. W. YOKOM. STEAM GENERATOR.

No. 891,767. Patented Oct. 28, 1888..

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W. W YOKOM. STEAM GENERATOR.

No. 391,767. -Patented Oct. 23, 1888.

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Uarrnn STATES PATENT WILFORD NV. YOKOM, OF NEW HARTFORD, IOVA, ASSIGNOR TO FREDERICK O. AUSTIN, OF CHICAGO, ILLINOIS.

STEAM-G ENERA'TOR.

SPECIFICATION forming part of Letters Patent No. 391,767, dated October 23, 1888,

Application filed March 31, 1888. Serial No. 269,186. (No model.)

.To aZZ whom it may concern:

Be it known that I, WILFORD W. YoKoM, a citizen of the United States, residing at New Hartford, in the county of Butler and State of Iowa, have invented certain new and useful Improvements in Steam-Generators for Cooking Feed and the like, of which the following is a specification.

This invention relates to a construction of steam generator more especially adapted to provide a simple, safe, and economical apparatus for the generation of steam to be used for cooking feed, laundry-work, and the like.

The objects of my invention are to provide, in connection with an increased area of heating-surface and an enlargement of the capacity of the generator, improved means for elosing the rear end of a fire-chamber contained within the boilcr, which said improvement is particularly applicable to the steanrgenerator set forth in Letters Patent No. 368,866.

In an appar tus characterized by my invention the boiler shell or casing of the steamgenerating chamber is adapted to inelose both the fire boX or Chamber and, preferably,asuitable length of fiue'pipe leading therefrom, so that the fiuepipe, as well as the walls of the fire-Chamber, can be utilized to provide within the steam generating Chamber an extended heating-surface. The fire-chamberis provided at the front with a door arranged to permit ready access to be had at all times to the fire; but the entire remaining portion of the firechamher box or casing is arranged to be submerged in a body of water when the steamgenerating ch amber is fillcd to a proper height. In this way all sides of the fire-chamber casing, with the exception of its front side or end, that is provided with a door, can be utilized to afford an extended heating-surface and the capacity of the steam generating chamber incrcased without enlarging the size of its shell or casing. Moreover, the fire-box casing, by being thus submerged in a body of Water, is prevented from burning out.

Oertain details of construction are hereinafter particularly described. y

In the drawings, Figure l represcnts a section taken on a Vertical plane centrally through an apparatus embodying myinvention. Fig.

2 represents a plug which can be used both to w close a water-inlet orificc at the top of the generator and to scrve as a Safety-valve when so desired. Fig. 3 is a section taken eentrally through the apparatus on a plane at right angles to the plane of Fig., 1. Fig. 4 represents an edge view of a plate adapted forcl'osing the fire-chamber at its rea-r end. Fig. 5 is a de` tail view illustrating a preferred mode of attaching the supporting-legs.

In said drawings, the shell or easing A of the boiler or steam-gencrating chamber comprises a horizontally-arranged drum or cylinder, a, adapted to contain both the fire-chamber B and a desirable body of water about the same, and an upright drum or cylinder, a', which rises from and at its lower end is in open communication with the interior of the horizontally-arranged drum that incloses the fire-Chamber. The fire-Chamber is formed by the appropriation of a suitable portion of the space within a drum, b,which contains a grate,

O, whereon the fire may be built. The drum which thus provides a fire-chambcr is supported within and arranged concentric to the lower horizontal section of the boiler-shell, and,being made of smallcr seetional area than the sectional area of its inclosing-shell, serves to provide between the two an annular water'- Space. In this way substantially the entirc cylindric surface of the fire-Chamber drum is utilized as a heating-surface,it being observed that even with a moderate fire the portion of the fire-Chamber drum below the grate will become heated. The flue or smoke-pipe D rises from the fire-Chamber drum and extends upwardly and centrally through the upper portion of the chamber that is formed within the upright boiler-shell a', so that from the point where the flue conneets with the fire-Chamber go to the point where it emerges from the highest point of the steam-generating chamber the smoke-line can be economically and conveniently utilized as a heating-surface auxiliary to that afforded by the fire-Chamber drum.

The firechamber drum is at one end closed by a head or end plate, which is provided with a door, D', to permit access to be had to the fire-Chamber. This closed end of the fireohamber drum is prefcrably flush or 'substan- Ioo tially flash with one end of its inclosing-cylinder, whercby a plate, E, can be utilized both as the head for said end of the horizontallyarranged boiler-section a, and as a front for the fire-chamber.

The fire-chamber drum is in this apparatus v made somewhat shorter in length than the boiler-section a ,in which itis contained, thereby providing, in addition to the annular waterspace a' about the fire-chamber, a water-space, aa, between the rear closed end, F, of the firechamber drum and the closed end or head G of the aforesaid lower eylindric portion, a, of the boiler. The provision of this water-space (L3 back of the rear end ofthe fire-chamber not only permits the utilization of the rear end of the fire-chamber drum as a heating-surface, but also increases the capacity of the boiler and prevents the rear end of the fire-chamber drum from burning out. In this way the firechamber, excepting at its front end, can be entirely surrounded by a body of water.

As a feature of improvement in certain details of construction, the rear end of the firechamber drum can be formed by a circular plate, F, having at one side an annular rib or flange,,adapted to fit the cylindric fire-chamber drum,andat its opposite side a set of arms or legs, f', proportioned in length to the desired width of water-space between this end of the fire-chamber drum and the end or head G of the boiler-section a, so that .when these several component parts of the structure are fitted together the arms f' may bear against the aforesaid end or head G of the lower boilersection. By such arrangement the plate G,employed to close one end of the lower horizontally-arranged boiler-section, and the plate E,employed to close the opposite end thereof, can be tied together by a suitable arrangement of tie-rods H and nuts, and thereby held in rigid connection with the boiler-section.

The annular fiangef of the rear end plate of thefire-chainber drum is adapted towedge u pon or into said drum,so as to provide at its connection therewith a tight joint, and as a preferred arrangement the tightness of such joint is further insured by some suitable packing. The presenee of the arms between the rear end plate of the fire-chamber drum and the end G of the lower boiler-section affords means whereby the integrity of said joint will be preserved after the parts have been proper] y fitted together, it being seen that the tightening up of the head or end plate, G, of the lower boiler-section will,through the medium of the arms or rearbracesf', readily and effectively tighten up the rear end plate of the fire-ehamber drum.

The front and rear end plates, E and G, are each provided with an annular wedge-shaped rib or fiange, g, for attaining a simple construction ofjoint between-such plates and the boiler-section a, and the front plate, E, is further provided with an annular wedge-shaped rib or fiange, e, adapted for a joint between such plate and the front end of the fire-ehamber drum.

VVith regard to othermatters herein shown, it maybe observed that the damper I extends longitudinally along aportion of the fire-chamber drum, and thereby provides over the firechamber proper a return-passage leading from the rear end portion of the tire-chamber and communicating with the smoke-fine; also that said return-passage can be contracted or expanded by adjusting the damper, which can be manipulated as in the patent hereinbefore referred to or in any other suitable way.

The water-supply tank K, provided with any suitable construction of inlet, 7a, and pump L, can, when desired, be supported upon the boiler and its pump connected with the boiler by a pipe, Z. This supply-tank can, however, be removed, when so desired, or the apparatus made and placed upon the market without it, it being seen that where the tank and pump accompany the apparatus the pipe Zean be detached from the boiler when the tank is not toibe used, and a cap or plug, M, fitted to close the boiler, which plug can be made sufficiently heavy to serve as a safetyvalve. The boiler can also be provided with means for leading therefrom two or more steam-conducting pipes-such, for example, as in said patent-or it can be provided with an ordinary cock, as at P, connecting with a single pipe, as shown.

A shelf or ash-pan, Q, is desirably attaehed to the front of the fire-chamber, and while the end plates, E and G, could be extended below the boiler to provide supports, I prefer to provide legs R, which can be detaohably bolted to such plates, in which way the apparatus with the legs detached will be less bulky and hence more conveniently shipped.

In using this apparatus-for example, in cooking feed-the discharge end of a pipe leading from the valve l? can be simply thrust into a barrel or other receptacle containing feed mixed, if desired, with a suitable quantity of water, in which way the feed can be readily cooked. On the other hand, by asimilar use the apparatus can be eniployed in laundry-work for steaming clothes. It Will also be apparent that the apparatus can be eniployed for other analogous purposes.

ln conclusion it may be remarked that the water-space a3, provided opposite the rear end of the fire-chamber drum, constitutes a distinctive feature which particularly characterizes Iny improved apparatus, and that the means hereinbefore described for closing` the rear end of the fire-chamber drum constitutes a further feature of improvement in an apparatus of this character.

VVhat I claim as my invention is- The combination, with the horizontal cylindric boiler-section a, closed at its ends by plates that are held in place by tie-rods, of the inclosed fire-chamber drum b, terminating short of one end of the said boiler-section and closed at its rear end by a flanged plate, F, provided with arms f', arranged to extend back from said closing-plate and abut against the plate which serves to close the rear end of the boiler-section, substantially as set forth.

VVitnesses: WILFORD W. YOKOM.

' CHAs. G. PAGE,

L. S. LoGAN.

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